Особисті дані приховані

Hanna Kontar

Summary
Data Analyst
Data Analyst with hands-on experience in SQL, Python
and Tableau. Completed several end-to-end analytics
projects: from data cleaning and feature exploration to
Personal details
dashboard creation and A/B test evaluation. Strong
problem-solving mindset and background in
Phone : [відкрити контакти](див. вище в блоці «контактна інформація»)
engineering.
Gmail : [відкрити контакти](див. вище в блоці «контактна інформація»)

Telegram : @AnyaKontar

LinkedIn : LinkedIn
Experience
Address : Kryvyi Rih, Ukraine

Can work during blackouts thanks
Data Analyst,

to the generator,ecoflo

From 2025

Completed a data analytics project using SQL with
Skills focus on writing and optimizing queries

Experience in building interactive dashboards in
Spreadsheets: Pivot Tables, Tableau.

Data Cleaning, Visualization
Conducted data exploration through EDA, statistical
SQL: Advanced Queries, analysis, and A/B testing.
Window Functions, Query
Optimization, Common Table
Sales Assistant,

Expressions (CTE)

Master Zoo

Python: Pandas, NumPy,
2019 – 2022
Matplotlib, Seaborn, Exploratory
Data Analysis (EDA)

Used customer-needs analysis and communication
Power BI, Tableau: Interactive
skills to match clients with the right products.

Dashboards, Data Storytelling,
Maintained high accuracy in payment processing
Publishing

and daily operational tasks.
Statistics: Sampling, Hypothesis
Testing, Correlation, Statistical
Significance

A/B Testing: Planning, Analysis,
User Activity Analysis (SQL + BigQuery):

Skills: window functions, segmentation, cohort analysis.

Reporting

Other Tools: Jupyter Result: found key differences in engagement between
countries and user groups, which helps to more accurately
Notebooks, Google Sheets,
identify priority markets and optimize communications.
Figma

Languages: Ukrainian, English

(Upper-Intermediate) Sales Performance Dashboard (Tableau, Excel, SQL):

Skills: visualization, aggregation, KPI.

Result: a clear tool for spotting seasonality and weak-
performing regions.

Education

I nstitution Kryvyi Rih National A/B Testing Tool (Python + Tableau):

University
Skills: statistics, p-value, t-test.

Qualification and Degree
Result: created a tool that instantly calculates
Bachelor’s Degree in Mining
significance for multiple metrics.

Engineering (Occupational

Safety)

Dates Attended 2013 – 2017 Website Traffic Analysis (EDA):

Tools & skills: Python, Pandas, Seaborn; descriptive
statistics, anomaly detection, trend analysis,
Additional education segmentation.

Result: identified seasonal and weekly sales patterns,
differences between regions, channels and product
Data Analyst course at Mate
academy
categories — providing a clear picture of when та
where performance rises or declines.

Web Design course at Alpaca
school